Improvement in permutation-locks



M'. SGHWABRZLER. Permutation-Look.

No. 197,568. Patented Nov. 27, 1877.

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Witnesses;

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MARTIN scrrwAEnzLEn, or Nnw YoniLN. Y.

IMPROVEMENT IN PIERMAUTATIONfLOCKS.

Specification forming part of Letters Patent No,'197,568, dated November 27, l1877 application led September 4, 1877.v

To all 'whom fit may concern:

Be it known that I, MARTIN SCHWAERZLER, of New York city, New York, have invented a new and Improved Bolt-Lock, of which the following is a specification:

Figure 1 is an outer face view of a door-A lock containing my improvement. Fig. 2 is a sectional face view, showing the interior of said lock. Fig. 3 is atransverse section thereof on the line c c, Fig. 2. Fig. 4 is aface view of a padlock having the improvement. Fig. 5 is a sectional face view thereof, showing the inner mechanism. Fig. 6 is a transverse section thereof on the line k k, Fig. 5. Fig. 7 is a sectional face view of a padlock having a modification of the invention. Fig. 8 is a detail faceview, and Fig. 9 a detail edge view, ofthe key. Fig. 10 is a detail face view, and Fig. 11 a detail edge view, of the vibrating nger which is applied to the lock-bolt.

Similar letters of reference indicate corresponding parts in all the figures.

This invention relates to a new bolt-lock, being the class of lock which is provided with a reciprocating or oscillating bolt, such as door-locks, padlocks, safe-locks, and the like.

` The invention consists, principally, in pivoting to the bolt a projecting finger, which, when it snaps into a notch or rabbet that is provided on the key, constitutes thelever by which the bolt is moved. And the bolt cannot be moved lmless the said finger is properly engaged with the key, in manner stated. The invention also consists in combining with said pivoted inger' a star-wheel, to which intermittent rotary motion can be imparted by the key, and which, in its movements, will carry the iinger around with it, to make the lock a kind of combination-lock.

The invention consists, also, in other details of improvement, hereinafter more clearly pointed out.

In the drawing, the letter A represents the lock-case; B, the sliding bolt; C, the key; D, a spring, by which the bolt is thrown into the locked position. To the bolt is pivoted, by a pin, a, a projecting ringer, E, which has a cam portion, b, against which a friction-spring, d, bears, as clearly shown in the drawing. The point or end e of the finger E is quite narrow or sharp. The edge of the key C has a rabbet, f, formed in it. The parts thus far described are in all the locks illustrated in the drawing; butin Fig. 7 they are shown without any additional parts. N ow, when, with reference to Fig. 7, the key is iirst turned to the left until the end e of the finger springs into the rabbet f ofthe key, the position shown in Fig. 7 will be attained, andthe lockis then readily opened by merely turning the key to the right, in which case the key takes hold of the bolt by the intermediate lever or linger E,

which is held to the bolt by its pivot, and to the key by the wall ofthe rabbet. But, though exceedingly simple, this lock can only be opened by a person well acquainted with its construction, as the rabbet f is so shallow that the key can only, with the greatest care, be prevented from passing beyond the point of the finger E, when said key is turned to the left. When the key is removed, or not in contact with the linger, the latter is, by the friction-spring d, that bears on the cam portion b, thrown into the way of the key, so that by revolving the key the said finger may be properly reached.

In Figs. 2, 3, 5, and 6 is further shown a star-wheel, F, rigidly connected with the tin- Y ger E, so that itsprongs'will be in the way of the key. In this case the cam portion b of the linger is of such form as to permit the rotation of the finger. In a look thus constructed the key may be turned in either direction, each revolution of the key causing a partial rotation of the star-wheel F and nger E. And when the finger has, by such rotation, been brought between the key and the outer end of the bolt, the key may be turned slightly outward to engage the end of the finger in the rabbetf, as indicated in Figs. 2 and 5, and can then be used to open the lock. Now, where the star-wheel is used, the lock becomes, in reality, a species of combination-lock, requiring gures or marks on the outer face and amark or marks on the outer part of the key, as indicated in Figs. 1 and 4i;y and it further requires or renders desirable a means for observing at least one position of the star-wheel, which I provide in form of a line or mark, g, on the wheel or its pivot, which line or mark may be -observed through an aperture, h, in the face-plate of the lock.

Fig. 6 illustrates, also, a spring-pin,z,wl1ich enters through the' back plate of` -a padlock into a cam-groove in the end of the key, and'.

which prevents the turning of the key in the direction which unlocks the bolt. Therefore,

such a padlock can only be opened if the operator, in addition to properly placing Vthe star-4 Wheel and finger, also pulls the pin z', With one hand, clear from the key, to permit the nal unlocking motion. y Y y I claim as my inventionl. rlhe combination of the lock-bolt B with the iinger E pivoted thereto, and with, the iiction-springd, which acts on said finger, substantially as herein shown and described.

2. The combination of the lock-bolt B and spring-pin i for entering a cam-groove in said key-substantially'as herein shown and de scribed.

MAnrin SCHWAERZLER.

` Y `Vitnesses:

ERNEST C. WEBB, F. V. BmEsEN. 

